X x-i i i



UNITED STATES PATENT FFICE.

HENRY M. (JROWELL, OF IRVINGTON, A SSIGNOR OF ONE-HALF TO GEORGE T.CARTER, OF ELIZABETH, NEW JERSEY.

EXTENSIBLE MOSQUITO-BAR FRAME.

SPECIFICATION forming part of Letters Patent No. 269,390, dated December19, 1882.

Application filed October 9, 1882.

To all whom it may concern:

Be it known that I, HENRY M. GRoWELL, a citizen of the United States,residing at Irvington, in the county of Essex and State of New Jersey,have invented certain new and useful Improvements in ExtensibleMosquito- BarFrames; and I do hereby declare the following to he a full,clear, and exact description of the invention, such as will enable othx0ers skilled in the art to which it appertains to make and use the same,reference being had to the accompanying drawings, and to letters ofreference marked thereon, which form a part of this specification.

The object of this invention is to facilitate the adjustment of theframe to windows of difl'erent sizes, to strengthen the frame, to renderit more durable, and to reduce the cost of construction.

The invention consists in the peculiar construction, combination, andarrangement of the several parts by means of which the frame is capableof being adjusted both vertically and horizontally, as will be set forthherein- 2 after.

1n the drawings, Figure 1 is a front elevation of my improved device.Fig. 2 is a section (enlarged) taken through line 00, and Fig. 3illustrates a modified form of the device.

0 in carrying out my invention I construct four hollow and slotted angleirons or boxes, b, which form the four corners of the frame, of sheetmetal, in which are adjusted strips or bars of wood a. a, arranged tooperate in con- 5 nection with said irons as followsto wit, the strips aa are placed in pairs within the boxes, as shown. in each pair-one ofthe strips, a, is firmly secured by screws, rivets, or otherwise to oneof the angle-irons atone end and allowed to slide in the socket oftheopposite iron,while the other strip, a, is secured in the last said ironand slides in the first. By this construction and arrangement the sizeof the frame may be increased or diminished in both verti- 5 cal andhorizontal directions by simply pulling the frame apart or pressing ittogether, as

(No model.)

the strips of wood slidefreely in the operation,

as will be readily understood. Ample room is afforded by means of theslot to fasten the netting or wire-cloth to the wood, which, being odone, serves to hold the parts of the frame in fixed relation to oneanother after said frame has been adjusted to a given size.

If it be desired to reduce the size of the frame, the netting must beloosened, the parts pressed together, and the netting cut off to suit.

Brackets or braces 0' may be employed to give added strength to theframe. The slotg in the angle-irons may be in the side ofthe iron, asshown in Fig. 2, or within the inner face thereof, as shown in Fig. 3.The netting may be tacked directly to the frame, or acleat, e, beemployed, as shown in Fig. 3, the latter method being preferable, as thecleat fitting in the 6 slot gives a superior finish to the frame, aswell as giving greater security to the said netting and holding the partinto a more rigid or fixed relation.

Having thus described my invention, whatl claim as new, and desire tohave secured by Letters Patent, is

1. The combination, with the hollow angleirons, of the bars a a,arranged therein, substantially as and for the purposes set forth andshown.

2. As an improved article of manufacture, an adjustable mosquito-barframe consisting of the four hollow and slotted angle-plates I) and thestrips of wood arranged therein in 89 pairs, one of each pair beingsecured to the outer portion of each side and the other to the innerportion, substantially as shown and described.

In testimony thatl claim the toregoingI have hereunto set my hand this25th day of September, 1882.

HENRY M. OROWELL.

Witnesses:

OLIVER DRAKE, GEORGE T. CARTER.

